High γ nuclei are polarized first, then transfer spin order to 13C, cutting DNP preparation time while keeping strong NMR signal levels.
Band-inversion-induced optical confinement replaces DBR feedback to deliver stable single-mode vertical lasing with lower heat and fabrication burden.
Downstream Raman pumping lowers lumped-gain saturation and nonlinear penalty while improving incident power and noise figure.
A resonator with meta holes and integrated sensing layers tracks wavelength shifts to detect fluid impurities, temperature, hydrogen, and radiation.
Independent layer temperature control and thermal insulation help this chip-scale VCL magnetometer resist drift and vibration in compact navigation use.
Integrating the gain chip and optical amplifier on one substrate enables single-step mounting to the wavelength block, cutting assembly time.
Alternating main and preliminary electrode discharge decomposes fluorocarbon buildup while preserving pulse laser energy and exposure resolution.
Sub-bandgap femtosecond backside injection uses nonlinear absorption and beam steering to image IC active layers without substrate thinning.
A standardized command, acknowledge, arming, and firing circuit improves laser weapon integration while disabling firing under inadequate power.
Stored gain estimators for each pulse repetition rate let the laser controller stabilize energy quickly and improve photolithography dose control.
A thermal-model compensation signal adjusts diode pump current during cold starts to suppress laser power overshoot and undershoot.
Periodic modulation creates Floquet quasi-energy levels, letting a laser generate coherent new frequencies and even gain without inversion.
Residual pump light is wavelength-separated and fed back through the gain medium to raise cladding-pumped multi-core fiber amplification efficiency.
A subwavelength intracavity grating creates birefringence in a VCSEL, lowering one polarization threshold for stable, low-loss output.
External photodetectors and sense resistors let a controller track ToF laser power drift and shut down unsafe output before eye hazards occur.
Sub-bandgap femtosecond pulses inject carriers into an IC active layer through nonlinear absorption, avoiding substrate thinning and light loss.
By attenuating the pulse leading edge before full power, this circuit cuts laser relaxation oscillations and prevents fiber overheating.
Low-speed monitoring data is overlaid on a direct modulated laser’s average optical power, enabling remote extraction without extra fiber.
Multiple accelerator modules, splitters, and recombiners keep light output continuous when a module fails by rerouting equal-length electron beam paths.
Optical pumping replaces current injection in SOA arrays to cut loss and heating, enabling higher-yield single-die integration.
A dichroic mirror tuned above the fluorescence peak traps emitted light in the guide plate and concentrates it at the edge for solar-pumped lasers.
A single electron beam is reused across serial FEL oscillators to raise brightness and pulse repetition rate while lowering facility cost.
Mechanical and magnetic shims tune the undulator field profile to correct phase errors, boosting x-ray radiation intensity and coherence.
Multiple accelerator modules split and recombine electron beams to keep coherent high-energy light output running during module shutdowns.
An integrated cavity with temperature and length control stabilizes phase matching, reduces contamination, and improves frequency conversion.
Interleaved optical sections adjust beam path length and steer FEL radiation to preserve microbunching despite large electron energy spread.
An optically pumped stacked VCSEL with a saturable absorption layer enables short, high-peak long-wavelength pulses for safer LiDAR ranging.
Laminar coolant guide plates and cyclic plate motion improve heat removal in a laser amplifier head without degrading beam quality.
Interleaved optical sections refocus FEL radiation and adjust electron path lengths to preserve microbunching with large energy spread.
A shared contact layout for VCSEL arrays improves electrical connection while increasing element integration and lowering resistance.
By placing quantum wells inside the DBR, this VCSEL shortens cavity length to widen tuning range while preserving stable single-mode lasing.
A dielectric-grating waveguide uses resonant mode confinement to turn scattered Smith-Purcell emission into coherent laser-like radiation.
Multiple beam passes through a tilted EO medium cut Pockels cell drive voltage and power dissipation for fast laser pulse picking and Q-switching.
Switchable resonance locking cuts converted-radiation power fluctuations while preserving selectable high-power operation.
Optical pumping and periodic type I quantum wells improve hole confinement and thermal limits for tunable mid-IR gas-sensing lasers.
Sub-bandgap femtosecond pulses enable backside carrier injection through intact IC substrates, avoiding thinning and speeding beam-steered imaging.
Two-stage pumping uses stimulated emission from an intermediate state to generate coherent DUV photons in a smaller, lower-cost laser.
Floating and clamping diodes reroute parasitic capacitor currents to ground, preventing mistimed laser emission in one-drive-multiple LiDAR circuits.
A vertical pulsed laser through an optically thin layer guides and focuses electrons while simplifying etching and reducing electrostatic disturbance.
Voltage-difference monitoring lets a semiconductor DC disconnect match relay-level diagnostics while avoiding relay wear and bulky installation.
Optical resonators shift RF and microwave frequencies with electro-optic tuning, improving noise performance beyond conductive conversion.
Driving a piezo-actuator in resonance achieves high scanning speeds and large time offsets, overcoming bandwidth limits of conventional control loops.
Circular segmented pump diodes with conductive spacers eliminate hot spots and uneven excitation in diode pumped lasers.